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Vaisala HMT330 Humidity and Temperature Transmitter

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Top-of-the-line model for high dewpoint measurement in demanding industrial applications. Features large numerical and graphical display, six probe models, a wide temperature range, optional data logging and (W)LAN interface and IP65 (NEMA4) compliant housing.

HMT330 Series Humidity and Temperature Transmitters for high dewpoints

The Vaisala HUMICAP® Humidity and Temperature Transmitter Series
HMT330 is designed for demanding industrial applications where stable measurement and wide customization is important.

Vaisala HUMICAP® performance
The HMT330 series incorporates Vaisala’s 30 years of experience in industrial humidity measurement. An updated, even more stable and chemical resistant HUMICAP® sensor is available, next to the proven reliable and accurate sensor.

Chemical purge minimizes effects of contaminants
In environments with high concentrations of chemicals and cleaning agents, chemical purge helps to maintain measurement accuracy between calibration intervals. Chemical purge involves heating the sensor to remove harmful chemicals. The function can be initiated manually or programmed to occur at set intervals.

Graphical display of history and measurement trends
The HMT330 can be ordered with a large numerical and graphical display, which allows the user to clearly monitor operational data, measurement trends and 1-year measurement history. The optional data logger with real-time clock makes it possible to generate over four years of measured history, and zoom in on any desired time or time frame. The battery backup of the clock guarantees a reliable logging of measured data.

The display alarm allows tracking of any measured parameter, with a freely configurable low and high limit.

Data collection and (wireless) transfer to PC
The recorded measurement data can be viewed on the display or transferred to a PC with Microsoft Windows® software. The transmitter can also be connected to a network with an optional (W)LAN interface, which enables a (wireless) Ethernet connection. A USB-RJ45 cable makes it easy to connect the service port of the HMT330 to a PC.

Many ways to install and versatile outputs
Mains and DC power options, and several mounting accessories make the instrument easy to install. The HMT330 can have up to three analog outputs. Isolated galvanic power supply and analog outputs are also available. For serial interface the USB connection, RS232 and RS485 can be used.

Flexible calibration
The HMT330 instruments are calibrated at six humidity points at the factory. A quick, one-point field calibration can be performed with the hand-held HM70 meter. A two-point calibration can be performed with the HMK15 salt bath calibrator in a controlled environment. The transmitter can be sent to Vaisala for recalibration. Accredited calibrations and maintenance contracts are also available.

Ordering Information
Complete unit
Industrial Humidity and Temperature transmitter. Includes 2m cable as standard ( except for HMT331 ). Operating voltage 10 .. 35 VDC/24VAC, Two analog outputs selectable from 0 .. 20 mA, 4 .. 20 mA, 0 .. 1v, 0 .. 5v, 0 .. 10v. Excludes graphical display. Modbus possible with RS485(RTU) or Ethernet options(TCP/IP).

HMT331 Transmitter for Wall Mounting Temperature range -40°C to +60°C
HMT333 Transmitter with Compact Probe. Temperature range -40°C to +80°C
HMT333H Transmitter with Compact Probe. Temperature range -40°C to +120°C
HMT334 Transmitter with Pressure Tight Probe. Temperature range -70°C to +180°C
HMT335 Transmitter with High Temperature Probe. Temperature range -70°C to +180°C
HMT337 Transmitter with Small Vapour-tight Probe. Temperature range -70°C to +180°C
HMT337W Transmitter with Small Vapour-tight, Warmed Probe. Temperature range -70°C to +180°C
HMT338 Transmitter with Probe for Pipeline Installations. Temperature range -70°C to +180°C

HMT300CP2 Extra variables (Td/Tf, a, x, Tw, ppm, pw, pws, h, dT)
HMT330LD Graphic LCD with backlight
DCDC-1SUB Galvanic isolation for outputs
POWER-1SUB Power supply module
215996 Power supply module with AUS power cord
RELAY-1SUB Relay output
RS485-1SUB RS-485 serial interface
AOUT-1SUB 3rd analog output
212142 8-pole connector with 5 m cable
212416 8-pole connector equipped with screw terminals
25041HM Chemical purge (with HUMICAP180RC)
LOGGER-1SUB Data logger module
ETHERNET2 Ethernet(LAN) interface + 2 m cable (RJ45)
WLANATENNA1 WLAN wireless interface + antenna
215094 DIN Rail Clips with installation plate

Optional Sensor Heads and Cable Lengths
HMP303PZ5-2 5 m Cable for HMT333
HMP303PZ10-2 10 m Cable for HMT333
HMP303PHZ5-2 5 m Cable for HMT333H
HMP303PHZ10-2 10 m Cable for HMT333H
HMP304PZ5-2 5 m Cable for HMT334
HMP304PZ10-2 10 m Cable for HMT334
HMP305PZ5-2 5 m Cable for HMT335
HMP305PZ10-2 10 m Cable for HMT335
HMP307PZ5-2 5 m Cable for HMT337
HMP307PZ10-2 10 m Cable for HMT337
HMP308PZ5L178-2 5 m Cable for HMT338
HMP308PZ10L178-2 10 m Cable for HMT338
HMP308PZ2L400-2 400 mm probe with 2 m cable for HMT338
HMP308PZ5L400-2 400 mm probe with 5 m cable for HMT338
HMP308PZ10L400-2 400 mm probe with 10 m cable for HMT338
213886 Additional T probe with 2 m cable for HMT337W with warmed probe *)
213888 Additional T probe with 5 m cable for HMT337W with warmed probe *)
213889 Additional T probe with10 m cable for HMT337W with warmed probe *)

HMT330 accessories
214829 Wall mounting plate
226252 Probe holder plate for HMT331 short cable probe
215108 Pole installation kit
215109 Pole installation kit with rain shield
215094 DIN rail kit
210697 Duct installation kit for HMT333 and HMT337
210696 Mounting flange for HMT335
SWG12ISO38 Swagelok ISO (12 mm) for HMT337
SWG12NPT12 Swagelok NPT (12 mm) for HMT337
BALLVALVE-1 Ball valve set for HMT338 with Welding Joint
19446ZZ Service cable for PC
215005 MI70LINK software for Windows + service cable for PC
219916 MI70Link software for Windows +USB-RJ45 Cable
215003 Duct installation kit for temperature probe

Spare Parts for HMT330 probes
HM47280SP Sintered Filter AISI 316L, Spare Part
DRW010281SP PPS Plastic Grid with Stainless Steel Netting
DRW010276SP PPS Plastic Grid filter, Spare Part.
215094SP DIN Rail Clips with installation plate, Spare Part
AUSPOWER-1SP Power supply 240VAC module with AUS power cord, Spare Part